Reorder Point Calculator
Work out when to place your next production order, and how much cash you'll need ready. Enter your own sales velocity, lead time, and payment terms; get an order-by date, a suggested quantity, and the deposit/balance schedule. Nothing you enter is stored.
Example: 3,600 units on hand, 30/day, 60-day lead time
Enter your own numbers below; the math updates as you type.
Count everything already paid for or committed: warehouse stock, 3PL stock, and production runs in progress.
Last 30–90 days of unit sales divided by days in the window. Use the higher of recent velocity vs. seasonal average if you're heading into a peak.
Lead time = PO placement to sellable stock in your warehouse, including transit and receiving. Supplement manufacturing runs commonly take 8–10 weeks before shipping. Safety days buffer demand spikes and supplier delays; 2–4 weeks is a common starting point — tighten it only with reliable suppliers.
Many contract manufacturers invoice ~50% at PO and the balance at shipment — adjust to your actual terms.
Sizes the suggested order quantity. Balance MOQ requirements against how much cash you want tied up in stock.
When to order — and the cash it takes
Order by
August 25, 2026
about 39 days from now
- Reorder point
- 2,430 units
- Available (on hand + on order)
- 3,600 units
- Days of cover left
- ~120 days
- Suggested order (90 days of cover)
- 2,700 units
Cash outlay window
- Deposit (50%) due at order (~August 25, 2026)
- $10,800
- Balance around shipment (~October 24, 2026)
- $10,800
- Total order cost
- $21,600
The order-by date is a cash-planning date, not just an inventory date: the deposit is committed weeks before the balance, and months before the stock turns back into revenue.
Assumptions behind these numbers
Based only on the numbers you entered, as of July 17, 2026. Steady demand of 30 units/day; every on-order unit arrives sellable; lead time of 60 days plus 21 safety days. Nothing is stored — recalculate whenever your velocity or lead time changes.
This is a planning estimate, not inventory or financial advice. Real demand is not steady: promotions, seasonality, and channel changes move your velocity, and MOQ floors may force a larger order than the suggestion. Recheck the math against your actual sales data before committing a PO.
Planning the money side too? See the inventory management guide and the cash-flow guide.
Long lead times driving the math? We source quotes from vetted manufacturers — lead-time reliability included in the comparison.